automake code snippet to deal with Fortran 90 modules, extracted from MPICH's (perl-generated) src/binding/f90/Makefile.mk

gistfile1.mak

# variables for custom "silent-rules" for F90 modules
mod_verbose = $(mod_verbose_$(V))
mod_verbose_ = $(mod_verbose_$(AM_DEFAULT_VERBOSITY))
mod_verbose_0 = @echo "  MOD     " $@;

# we "manually" build the f90 sources and add them with LIBADD
lib_lib@MPILIBNAME@f90_la_SOURCES =
lib_lib@MPILIBNAME@f90_la_LIBADD += src/binding/f90/mpi_constants.lo

# now force libtool FC rules/variables to be generated and cause FC linking to
# be selected for lib/lib@MPILIBNAME@f90.la
EXTRA_lib_lib@MPILIBNAME@f90_la_SOURCES += src/binding/f90/mpi_constants.f90

src/binding/f90/mpi_constants.$(MOD)-stamp: src/binding/f90/mpi_constants.f90 src/binding/f90/mpifnoext.h
	@rm -f src/binding/f90/mpi_constants-tmp
	@touch src/binding/f90/mpi_constants-tmp
	@( cd src/binding/f90 && \
	   if [ "$(FCEXT)" != "f90" ] || [ ! -f mpi_constants.$(FCEXT) ] ; then \
	       rm -f mpi_constants.$(FCEXT) ; \
	       $(LN_S) $(abs_top_srcdir)/src/binding/f90/mpi_constants.f90 mpi_constants.$(FCEXT) ; \
	   fi )
	$(mod_verbose)$(FC_COMPILE_MODS) -c src/binding/f90/mpi_constants.$(FCEXT) -o src/binding/f90/mpi_constants.lo
	@( cd src/binding/f90 && \
	   if [ "$(FCEXT)" != "f90" ] || [ ! -f mpi_constants.$(FCEXT) ] ; then \
	       rm -f mpi_constants.$(FCEXT) ; \
	   fi )
	@mv src/binding/f90/mpi_constants-tmp src/binding/f90/mpi_constants.$(MOD)-stamp

src/binding/f90/mpi_constants.lo src/binding/f90/$(MPICONSTMOD).$(MOD): src/binding/f90/mpi_constants.$(MOD)-stamp
## Recover from the removal of $@
	@if test -f $@; then :; else \
	  trap 'rm -rf src/binding/f90/mpi_constants-lock src/binding/f90/mpi_constants.$(MOD)-stamp' 1 2 13 15; \
	  if mkdir src/binding/f90/mpi_constants-lock 2>/dev/null; then \
## This code is being executed by the first process.
	    rm -f src/binding/f90/mpi_constants.$(MOD)-stamp; \
	    $(MAKE) $(AM_MAKEFLAGS) src/binding/f90/mpi_constants.$(MOD)-stamp; \
	    rmdir src/binding/f90/mpi_constants-lock; \
	  else \
## This code is being executed by the follower processes.
## Wait until the first process is done.
	    while test -d src/binding/f90/mpi_constants-lock; do sleep 1; done; \
## Succeed if and only if the first process succeeded.
	    test -f src/binding/f90/mpi_constants.$(MOD)-stamp; exit $$?; \
	  fi; \
	fi

CLEANFILES += src/binding/f90/mpi_constants.$(MOD)-stamp src/binding/f90/$(MPICONSTMOD).$(MOD) src/binding/f90/mpi_constants.lo src/binding/f90/mpi_constants-tmp